different types of tires on it, three completely different tread patterns on her car. >> those same tire impressions were discovered not far from natalie's body. and the entire right side of natalie's car was scratched. it appeared that the driver had misjudged the distance between the car and the bushes along the road leading to the crime scene. natalie's husband matthew had a well-known aversion to night driving. >> matthew, when he was 12 years old, had an accident where he was blinded in his right eye. and he wore glasses. but he was blind in this eye. >> a driver with a visual impairment in his right eye would have had difficulty judging the distance on the right side of the vehicle. now suspicious, investigators checked the mirabals' telephone record, looking for possible clues.